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[Type the document title] 1. Thit k cc thit b chnh1.1. Thit k thit b trao i nhit

Cng sut ca thit b: 0.309 MKcal / h Xc nh lu cht v tnh cht: Lu cht nng: hi nc bo ha p sut thp P = 5 bar, i trong ng Lu cht lnh: dng nguyn liu c P = 20 bar, T = 46.0850C Xc nh lu lng hi nc: s dng thit b Flash: n nhit ca hi nc thu c t thit b Flash: -0.93372 Kcal / h Khai bo cho thit b: Chn phng php tnh: Fixed Duty = 0.3350 MKcal / h D kin b mt trao i nhit: 8 m2

Ta c nhit hi nc p sut 4.842 bar l 151.254 0C nn ta tnh c gi tr Ttb:

Chn h s truyn nhit tng U = 640.397 KJ / m2.0CB mt trao i nhit d kin:

Kt qu:======================================================================= SHELL AND TUBE EXCHANGER DATA SHEET FOR EXCHANGER 'E1' I----------------------------------------------------------------------------I I EXCHANGER NAME UNIT ID E1 I I SIZE 250 - 6096 TYPE AES HORIZONTAL CONNECTED 1 PARALLEL 1 SERIES I I AREA/UNIT 8.0M2 ( 6.3M2 REQUIRED) AREA/SHELL 8.0M2 I I----------------------------------------------------------------------------I I PERFORMANCE OF ONE UNIT SHELL-SIDE TUBE-SIDE I I----------------------------------------------------------------------------I I FEED STREAM ID S4 S2 I I FEED STREAM NAME I I TOTAL FLUID KG/HR 811. 11408. I I VAPOR (IN/OUT) KG/HR 811. / 162. / 400. I I LIQUID KG/HR / 649. 11408. / 11008. I I STEAM KG/HR / / I I WATER KG/HR / / I I NON CONDENSIBLE KG/HR I I TEMPERATURE (IN/OUT) DEG C 152.5 / 151.3 46.1 / 84.7 I I PRESSURE (IN/OUT) BAR 5.00 / 4.84 20.00 / 19.50 I I----------------------------------------------------------------------------I I SP. GR., LIQ (60F/60F H2O) / 1.000 0.570 / 0.570 I I VAP (60F/60F AIR) 0.622 / 0.622 / 1.734 I I DENSITY, LIQUID KG/M3 / 872.553 528.910 / 462.359 I I VAPOR KG/M3 2.622 / 2.545 / 45.331 I I VISCOSITY, LIQUID CP / 0.258 0.111 / 0.074 I I VAPOR CP 0.012 / 0.012 / 0.011 I I THRML COND,LIQ KCAL/HR-M-C / 0.1945 0.0984 / 0.0804 I I VAP KCAL/HR-M-C 0.0245 / 0.0244 / 0.0227 I I SPEC.HEAT,LIQUID KCAL/KG-C / 1.0117 0.6395 / 0.8029 I I VAPOR KCAL/KG-C 0.4708 / 0.4703 / 0.5525 I I LATENT HEAT KCAL/KG 515.70 59.55 I I VELOCITY M/SEC 3.93 3.79 I I DP/SHELL BAR 0.16 0.50 I I FOULING RESIST HR-M2-C/KCAL 0.00041 ( 0.00084 REQD) 0.00041 I I----------------------------------------------------------------------------I I TRANSFER RATE KCAL/HR-M2-C SERVICE 640.40 ( 501.76 REQD) CLEAN 1597.88 I I HEAT EXCHANGED M*KCAL/HR 0.335 MTD(CORRECTED) 83.5 FT 0.999 I I----------------------------------------------------------------------------I I CONSTRUCTION OF ONE SHELL SHELL-SIDE TUBE-SIDE I I----------------------------------------------------------------------------I I DESIGN PRESSURE BAR 21. 24. I I NUMBER OF PASSES 1 2 I I MATERIAL CARB STL CARB STL I I INLET NOZZLE ID MM 102.3 52.5 I I OUTLET NOZZLE ID MM 77.9 77.9 I I----------------------------------------------------------------------------I I TUBE: NUMBER 22 OD 19.050 MM THICK 2.108 MM LENGTH 6.1 M I I TYPE BARE PITCH 25.4 MM PATTERN 90 DEGREES I I SHELL: ID 250.00 MM SEALING STRIPS 0 PAIRS I I BAFFLE: CUT 0.200 SPACING (IN/CENT/OUT): MM 54.55/ 50.80/ 54.55,SINGLE I I RHO-V2: INLET NOZZLE 286.7 KG/M-SEC2 I I TOTAL WEIGHT/SHELL,KG 1308.0(1)FULL OF WATER 1850.4 BUNDLE 258.3 I I----------------------------------------------------------------------------I Khai thc t phn mm m phngThng sShell SideTube Side

Vn tc dng (m/s)3.933.79

Tr lc (bar)0.160.5

p sut thit k (bar)2124

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Vt liuThp CarbonThp Carbon

ng knh ng vo (mm)102.352.5

ng knh ng ra (mm)77.977.9

Nhit dng nguyn liu ra khi thit b: 84.7 oC. Nhit dng nc ngng ra khi thit b: 151.3 oC. B mt trao i nhit yu cu: 6.3m2. B mt trao i nhit thc t: 8 m2. H s trao i nhit tng: U = 640.397KCAL/HR.M2.oC chnh lch nhit MTD: 83.456 oC H s hiu chnh FT : 0,999 (> 0,8) Tube: S ng: 22 ng. ng knh ngoi : 19,05 mm B dy: 2,108 mm Chiu di: 6,1 m Bc ng: 25,4 mm Shell: ng knh trong: 250 mm1.2. Tnh ton thit k Condenser

Cng sut ca thit b: -1.446 MKcal / h Xc nh lu cht v tnh cht: Lu cht nng: hi ra khi nh thp a 2: T = 51.1180C, P = 19.9 bar a 1: T = 45.2910C, P = 19.763 bar Lu cht lnh: H2O, P1 = 5 bar, T1 = 250C P2 = 4.796 bar, T2 = 35.5060C Xc nh lu lng ca nc lm lnh: s dng thit b Flash Nhit lng nc hp th t thit b Flash: 0.023 MKcal / h nhit lng cn thit h nhit ca dng sn phm nh xung 45.2910C l -1.4 MKcal / h lng nc cn dng cho thit b ngng t sn phm nh:

sn phm nh i ngoi ng nc i trong ng khai bo cho thit b: chn phng php tnh: Fixed duty = -1.4 MKacl / h D kin b mt trao i nhit:DTLM = 14, chn h s truyn nhit U = 510 KJ/ m2.h.C

Cc thng s khc mc nh Kt qu: ====================================================================

SHELL AND TUBE EXCHANGER DATA SHEET FOR EXCHANGER 'CONDENSER' I----------------------------------------------------------------------------I I EXCHANGER NAME UNIT ID CONDENSER I I SIZE 700 - 6096 TYPE AES HORIZONTAL CONNECTED 1 PARALLEL 1 SERIES I I AREA/UNIT 155.0M2 ( 152.6M2 REQUIRED) AREA/SHELL 155.0M2 I I----------------------------------------------------------------------------I I PERFORMANCE OF ONE UNIT SHELL-SIDE TUBE-SIDE I I----------------------------------------------------------------------------I I FEED STREAM ID GIA-DINH WATER-IN I I FEED STREAM NAME I I TOTAL FLUID KG/HR 20450. 162135. I I VAPOR (IN/OUT) KG/HR 20450. / / I I LIQUID KG/HR / 20450. 162135. / 162135. I I STEAM KG/HR / / I I WATER KG/HR / / I I NON CONDENSIBLE KG/HR I I TEMPERATURE (IN/OUT) DEG C 51.2 / 45.3 25.0 / 35.5 I I PRESSURE (IN/OUT) BAR 19.90 / 19.76 5.00 / 4.80 I I----------------------------------------------------------------------------I I SP. GR., LIQ (60F/60F H2O) / 0.516 1.000 / 1.000 I I VAP (60F/60F AIR) 1.477 / / I I DENSITY, LIQUID KG/M3 / 465.258 990.528 / 981.491 I I VAPOR KG/M3 43.755 / / I I VISCOSITY, LIQUID CP / 0.077 0.426 / 0.393 I I VAPOR CP 0.011 / / I I THRML COND,LIQ KCAL/HR-M-C / 0.0908 0.2463 / 0.2423 I I VAP KCAL/HR-M-C 0.0209 / / I I SPEC.HEAT,LIQUID KCAL/KG-C / 0.7914 0.8444 / 0.8544 I I VAPOR KCAL/KG-C 0.5302 / / I I LATENT HEAT KCAL/KG 66.51 I I VELOCITY M/SEC 0.50 1.22 I I DP/SHELL BAR 0.14 0.20 I I FOULING RESIST HR-M2-C/KCAL 0.00041 ( 0.00044 REQD) 0.00041 I I----------------------------------------------------------------------------I I TRANSFER RATE KCAL/HR-M2-C SERVICE 510.54 ( 502.65 REQD) CLEAN 977.51 I I HEAT EXCHANGED M*KCAL/HR 1.446 MTD(CORRECTED) 18.6 FT 0.967 I I----------------------------------------------------------------------------I I CONSTRUCTION OF ONE SHELL SHELL-SIDE TUBE-SIDE I I----------------------------------------------------------------------------I I DESIGN PRESSURE BAR 24. 21. I I NUMBER OF PASSES 1 2 I I MATERIAL CARB STL CARB STL I I INLET NOZZLE ID MM 202.7 202.7 I I OUTLET NOZZLE ID MM 102.3 202.7 I I----------------------------------------------------------------------------I I TUBE: NUMBER 432 OD 19.050 MM THICK 2.108 MM LENGTH 6.1 M I I TYPE BARE PITCH 25.4 MM PATTERN 90 DEGREES I I SHELL: ID 700.00 MM SEALING STRIPS 0 PAIRS I I BAFFLE: CUT 0.200 SPACING (IN/CENT/OUT): MM 187.38/ 140.00/ 187.38,SINGLE I I RHO-V2: INLET NOZZLE 707.9 KG/M-SEC2 I I TOTAL WEIGHT/SHELL,KG 4678.2(1)FULL OF WATER 10722.8 BUNDLE 3995.0 I I----------------------------------------------------------------------------IKhai thc t phn mm m phngThng sShell SideTube Side

Vn tc dng (m/s)0.51.22

Tr lc (bar)0.140.2


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Nhit dng nguyn liu ra khi thit b: 45.291 oC. Nhit dng nc ngng ra khi thit b: 35.506 oC. B mt trao i nhit yu cu: 152.6 m2. B mt trao i nhit thc t: 155 m2. H s trao i nhit tng: U = 510.539KCAL/HR.M2.oC H s trao i nhit yu cu: U = 502.65 KCAL/HR.M2.oC chnh lch nhit MTD: 18.56 oC H s hiu chnh FT : 0,967 (> 0,8) Tube: S ng: 432 ng. ng knh ngoi : 19,05 mm B dy: 2,108 mm Chiu di: 6,1 m Bc ng: 25,4 mm Shell: ng knh trong: 700 mm1.3. Tnh ton thit k Reboiler

Cng sut ca thit b: 1.531 MKcal / h Xc nh lu cht v tnh cht: Lu cht lnh: hi ra khi nh thp a 22: T = 106.4640C, P = 20.02 bar a 23: T = 106.4210C, P = 20.001 bar Lu cht nng: hi nc p sut thp P = 4 bar, tr lc qua thit b l 0.4 bar Xc nh lu lng ca nc lm lnh: s dng thit b Flash Nhit lng hi nc ta ra t thit b Flash: -0.9343 MKcal / h nhit lng cn thit nng nhit ca dng sn phm y ln 106.4210C l 1.501 MKcal / h lng nc cn dng cho thit b ngng t sn phm nh:

sn phm y i ngoi ng, hi nc i trong ng khai bo cho thit b: chn phng php tnh: Fixed duty = 1.5 MKacl / h D kin b mt trao i nhit:DTLM = 37.63, chn h s truyn nhit U = 675 KCal / m2.h.C

Cc thng s khc mc nh Kt qu:

SHELL AND TUBE EXCHANGER DATA SHEET FOR EXCHANGER 'REBOILER' I----------------------------------------------------------------------------I I EXCHANGER NAME UNIT ID REBOILER I I SIZE 500 - 6096 TYPE AKS HORIZONTAL CONNECTED 1 PARALLEL 1 SERIES I I AREA/UNIT 60.0M2 ( 60.6M2 REQUIRED) AREA/SHELL 60.0M2 I I----------------------------------------------------------------------------I I PERFORMANCE OF ONE UNIT SHELL-SIDE TUBE-SIDE I I----------------------------------------------------------------------------I I FEED STREAM ID GIA-DAY WATER-IN2 I I FEED STREAM NAME I I TOTAL FLUID KG/HR 35717. 4504. I I VAPOR (IN/OUT) KG/HR / 27624. 4504. / 1575. I I LIQUID KG/HR 35717. / 8093. / 2929. I I STEAM KG/HR / / I I WATER KG/HR / / I I NON CONDENSIBLE KG/HR I I TEMPERATURE (IN/OUT) DEG C 105.5 / 106.4 144.3 / 142.3 I I PRESSURE (IN/OUT) BAR 20.02 / 20.00 4.00 / 3.79 I I----------------------------------------------------------------------------I I SP. GR., LIQ (60F/60F H2O) 0.588 / 0.590 / 1.000 I I VAP (60F/60F AIR) / 1.970 0.622 / 0.622 I I DENSITY, LIQUID KG/M3 451.411 / 452.294 / 882.009 I I VAPOR KG/M3 / 52.714 2.129 / 2.024 I I VISCOSITY, LIQUID CP 0.068 / 0.068 / 0.261 I I VAPOR CP / 0.011 0.012 / 0.012 I I THRML COND,LIQ KCAL/HR-M-C 0.0752 / 0.0752 / 0.1984 I I VAP KCAL/HR-M-C / 0.0238 0.0238 / 0.0236 I I SPEC.HEAT,LIQUID KCAL/KG-C 0.8708 / 0.8675 / 0.9952 I I VAPOR KCAL/KG-C / 0.6029 0.4674 / 0.4667 I I LATENT HEAT KCAL/KG 54.48 521.19 I I VELOCITY M/SEC 1.50 22.10 I I DP/SHELL BAR 0.02 0.21 I I FOULING RESIST HR-M2-C/KCAL 0.00041 ( 0.00039 REQD) 0.00041 I I----------------------------------------------------------------------------I I TRANSFER RATE KCAL/HR-M2-C SERVICE 675.99 ( 683.13 REQD) CLEAN 1839.58 I I HEAT EXCHANGED M*KCAL/HR 1.531 MTD(CORRECTED) 37.4 FT 1.000 I I----------------------------------------------------------------------------I I CONSTRUCTION OF ONE SHELL SHELL-SIDE TUBE-SIDE I I----------------------------------------------------------------------------I I DESIGN PRESSURE BAR 24. 21. I I NUMBER OF PASSES 1 2 I I MATERIAL CARB STL CARB STL I I INLET NOZZLE ID MM 102.3 202.7 I I OUTLET NOZZLE ID MM 202.7 202.7 I I----------------------------------------------------------------------------I I TUBE: NUMBER 166 OD 19.050 MM THICK 2.108 MM LENGTH 6.1 M I I TYPE BARE PITCH 25.4 MM PATTERN 90 DEGREES I I SHELL: ID 500.00 MM BUNDLE DIAMETER(DOTL) 395.97 MM I I RHO-V2: INLET NOZZLE 3232.7 KG/M-SEC2 I I TOTAL WEIGHT/SHELL,KG 5769.1(1)FULL OF WATER 13152.9 BUNDLE 1662.1 I Khai thc t phn mm m phngThng sShell SideTube Side

Vn tc dng (m/s)1.522.1

Tr lc (bar)0.020.21


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Nhit dng nguyn liu ra khi thit b: 106.421 oC. Nhit dng nc ngng ra khi thit b: 142.339oC. B mt trao i nhit yu cu: 60m2. B mt trao i nhit thc t: 60.6 m2. H s trao i nhit tng: U = 675.993 KCAL/HR.M2.oC H s trao i nhit yu cu: U = 683.134 KCAL/HR.M2.oC chnh lch nhit MTD: 37.353 oC H s hiu chnh FT : 1 Tube: S ng: 166 ng. ng knh ngoi : 19,05 mm B dy: 2,108 mm Chiu di: 6,1 m Bc ng: 25,4 mm Shell: ng knh trong: 500 mm1.4. Thit k thp chng ct

a. Thit k Sizing M phng: thp c thit k l thp a v c chia lm 2 on: on luyn: t a 2 10 on chng: t a 11 26 H s ngp lt c chn l 75% h s ny cng nh th ng knh thp cng ln Cc thng s khc mc nh: ng knh a: 381 mm Khong cch gia 2 a: 609.6 mm Kt qu: da vo kt qu m phng ta chn cc thng s ca thp nh sau:

Khu vcng knh, mmS passS valve/ 1 ang chy chuyn

SIDE, mmCENTER, mm

11067110240.616N/A

21372114362.516N/A

Tn tht p sut qua mi a trong on luyn: 0.005 bar Tn tht p sut qua mi a trong on chng: 0.005 bar ng knh valve: 47.625 mm Downcomer backup (chiu cao lp cht lng trong ng chy chuyn so vi khong cch gia 2 a): min = 36.73%, max = 41.51%. Gi tr ny nh hn 50% nn hp l. Nu gi tr ny qu ln s tc ng n s xo trn lng hi trong thp, tc cht lng chy vo ng chy chuyn v hiu sut s dng a.b. Thit k Rating ng knh thp c chn: 1016 mm trong on luyn v 1219 mm trong on chng. Kt qu thu c t Tray Rating: DC Clear: chiu cao t mp di ca ng chy chuyn n n mt trn ca a: 38.1 mm Weir HT: chiu cao g ng chy chuyn: 50.8 mm

Downcomer backup (chiu cao lp cht lng trong ng chy chuyn tnh so vi khong cch gia 2 a): Min = 38.28% v Max = 46.02 %. Gi tr ny nh hn 50% nn hp l. Weir rate (vn tc cht lng chy vo ng chy chuyn): Min = 13.579 (cm3.s-1.mm-1) v Max = 20.111 (cm3.s-1.mm-1). Tn tht p sut qua tng a: 0,005 bar Flooding Factor , min = 75.1 % ; max = 81.5 % nh hn gi tr Sizing l 75%.1.5. Thit k Valvea. Cc thng s thit k: tnh ton v chn Valve cho h thng vi cc thng s thit k sau: Tr lc qua Valve: 1 bar tng ng vi 14.5 psi Lu lng bm: Qmax = 25 m3 / h (gi thit) = 110 gpm Qac = 20.046m3 / h = 88 gpm Qmin = 4 m3 / h (gi thit) = 17.6 gpm Lu cht bm l hn hp hydrocarbon vi nhit 82.7780C v dH20 = 0.512 b. Tnh ton v thit k Bc 1: xc nh cc thng s ca h gm: cc thng s ca lu cht, lu lng thit k, hot ng, ti thiu, ti a v p sut ri ca h thng. Bc 2: Xc nh tr lc cho php ca Valve: gi tr ny ph thuc vo h thng bm v thng thng tr lc ti a ca Valve cho php ly t 15 25% tr lc ca h thng. PValve = 14.5 psi Bc 3: tnh ton cc c trng ca Valve Xc nh h s tc dng theo cng thc:

Trong : G l t trng chun so vi nc 15oC Q l lu lng thit k. P l tr lc cho php ca valve. Ln lt tnh cc gi tr CVmax, CVmin, CVop:

T gi tr Cvmax = 24.8 v bng ti liu do hng sn xut valve cung cp bn di ta s chn van c (inch) c m khong 98.3%

m ca valve ng vi Cvmin = 3.98l 30.3% > 10% (tha mn). Xc nh ng knh ng dn:Da vo bng II.2 trang 371 STQTTB tp 1 chn = 1.5 (m / s) t tnh ng knh ca ng dn theo cng thc:

. ng knh ca valve ln hn ng knh ng dn (ph hp). Kim tra s b tr (Gain) thng qua lu lng s dng: tiu chun l s chnh lch 2 gi tr GAIN1 v GAIN2 phi nh hn 50% gi tr ln nht.

Kim tra:

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